<#macro captcha input=true>
	<#local random=Helper["java.lang.Math"].random()?string />
	<#if input><input type="text" size="20" name="_CAPTCHA_CODE_" placeholder="验证码"/></#if><img src="${CPATH}/captcha?_=${.now?long}" id="${random!'validate_code'}" alt="看不清，换一张" width="75" height="25" onclick="this.src='${CPATH}/captcha?_'+(new Date()).getTime()"/>
</#macro>